diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7dbb289..1c3f69e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,7 @@ if (ENABLE_CUSTOM_COMPILER_FLAGS)
         -Wformat-overflow
         -Wunused-macros
         -Wmissing-variable-declarations
+        -Wused-but-marked-unused
         )
 endif()